[Ips-dhfpr] IPS Daily HF Prop Report - 07 December 06

[rwc]

SUBJ: IPS DAILY HF PROPAGATION REPORT
ISSUED AT 07/2330Z DECEMBER 2006 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (07 DECEMBER) 
Date   T index  Conditions    
07 Dec     4    Normal-fair    

Flares    Max     Fadeout    Freq.  Sectors
  M2.0    1916UT  possible   lower  East Pacific/
                                    North American

MUFs:
   Equatorial PNG/Niue Region:
      Near predicted monthly values during local day,
      Depressed by 15% during local night.
   Northern Australian Region:
      Near predicted monthly values.
   Southern Australian and New Zealand Region:
      Depressed by 20% during local day,
      Depressed by 15% during local night.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Proton event in progress, increased absorption observed.

PCA Event : 10Mev Proton/PCA Event Began 06 12 2006 1625UT and is in progress

Predicted Monthly T index for December:  10
2. FORECAST (08 DECEMBER - 10 DECEMBER)
Date   T index  Conditions       MUFs                              
08 Dec     0    Normal-fair      depressed 10 to 30%/near predicted 
                                 monthly values 
09 Dec     0    Normal-fair      depressed 10 to 30%/near predicted 
                                 monthly values     
10 Dec     5    Normal-fair      near predicted monthly values/depressed 
                                 5 to 10%    
COMMENT: IPS HF Communications Warning 34 was issued on 6 December 
and is current for interval 6-8 December. Some disturbed periods 
and depressions observed for Northern Aus and Equatorial regions 
as well as Southern Aus/NZ regions over the last 24 hours. Poor 
ionospheric support for Antarctic conditions due to PCA effects
from the proton event that is in progress. Similar conditions 
are expected for Southern Aus/NZ regions and Antarctic regions 
for the next 2 days with the expected increase in geomagnetic 
activity. 
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For an explanation of some of the terms in this report, goto
http://www.ips.gov.au, and follow links to Educational->
Glossary on Solar Terrestrial Terms.

IPS Radio and Space Services        email: asfc at ips.gov.au
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